Five firms are in line to win places on a £200m Anglian Water framework covering water and water recycling projects over the AMP6 regulatory period from 2015 to 2020.
Kier, in joint venture with Clancy Docwra, has won the major part of the framework worth around £140m to carry out water infrastructure maintenance work.
This will include carrying out around 40,000 jobs a year such as repairing burst mains, finding and fixing leaks and replacing lead pipes.
Also this week Anglian Water announced four preferred bidders for the remaining part of the framework covering water recycling maintenance work.
These firms are Clancy Docwra, Claret Civil Engineering, Danaher & Walsh and Public Sewer Services.
These works will include fixing collapsed sewers and replacing damaged manholes and is expected to be worth over £60m in the same period.
Jason Tucker, head of capital delivery and supply chain management for Anglian Water, said: “Confirming our partners and preferred bidders for the final two alliances brings our tier one AMP6 procurement process near to its conclusion.
“Putting our entire tier one workload out to tender at one time has meant a lot of work, but it’s also proved to be a great opportunity to challenge how we do business, ultimately for the benefit of our customers.
“We’re confident the carefully selected partners are the best suited to meet our targets and the expectations of our customers, to drive innovation and efficiency throughout our processes, and to work collaboratively over the next 15 years.”